H: Hubs, Wheels and Tyres Alloy brake plate dimensions Help….

[royrobertson]

Hi Bill, Sorry a bit off track folks but the two photos of you on your bike seem to remind me of the Cadwell 100 miler in the 70s when we had to refuel. It looks like the pit crew sitting in the background. Is the second one at Curborough. Good old days when the VOC ran race and sprint meetings.
Cheers Roy

 

[Bill Thomas]

Spot on Roy !, Hope you are well,
Early days for me,
Yes I miss those days, But I still get out Local, The New Forest and the Coast,
Still got the same Bikes, But not Blue !,
All The Best, Bill.

 

[Cyborg]

Hi Bill, Sorry a bit off track folks but the two photos of you on your bike seem to remind me of the Cadwell 100 miler in the 70s when we had to refuel. It looks like the pit crew sitting in the background. Is the second one at Curborough. Good old days when the VOC ran race and sprint meetings.
Cheers Roy

This is a highjack friendly thread.

 

[Bill Thomas]

I wonder what is different with the Flash ?,
Maybe the drum only has 5 bolt holes ?
But the plate beats me ?.

This shows the big centre boss and the rib coming from it, On the Rear Plate.

 

[Bill Thomas]

This just came up on this Forum,
The third L/ning ? , Showing the sprocket on the drum !.

 

[litnman]

From #2749

 

[Cyborg]

Thanks,
Do you think it was original to the bike or added on when it got to the US?
Maybe RC is a clue? Looks the same as yours. Len’s bike had drums all around.

 

[Bill Thomas]

Ken , If you manage to log on to VOC Spares, I didn't find it easy,
But I am thick !,
There are nice photos of alloy plates,
Showing the bosses on the rear one.
I asked if they do a Sprocket adapter, And nothing came up,
But you have to say you are looking for Twin or Comet ?,
I would have liked to put in L/ning ????.
Will take a bit of getting used to the new site, For me !.

It has nothing to do with the new Forum,
They just had to change there supplier "Web" ?.

 

[litnman]

Thanks,
Do you think it was original to the bike or added on when it got to the US?
Maybe RC is a clue? Looks the same as yours. Len’s bike had drums all around.

It did not appear on the bike when it was new.

 

[Cyborg]

Ken , If you manage to log on to VOC Spares, I didn't find it easy,
But I am thick !,
There are nice photos of alloy plates,
Showing the bosses on the rear one.
I asked if they do a Sprocket adapter, And nothing came up,
But you have to say you are looking for Twin or Comet ?,
I would have liked to put in L/ning ????.
Will take a bit of getting used to the new site, For me !.

It has nothing to do with the new Forum,
They just had to change there supplier "Web" ?.

I was on there ordering parts a few days ago.

I grabbed the two steel plates I have with the idea of jotting down some measurements. Then comparing what I find to a drawing I have for some other locally made plates which are different than mine. Without even getting out the the measuring instruments, I can see a difference between the two plates. One is an original speedo side plate and the other is a new ordinary plate ( no speedo hole) from VOC Spares. The bosses for the shoe pivots are at different heights.
I was told the VOC Spares plates are made from the original stamping die, but not sure about the shoe pivots that are installed ( riveted?) in them.

So… now the question is, should they be different? Is the one with the speedo hole supposed to have higher bosses than the rest? I need to clean the paint off the new one and measure the boss for the cam. If it’s not higher by the same amount as the pivot, then the shoes would end up being cockeyed. Think I’m just going to $h@#can the whole drawing thing and figure out the measurements as I assemble everything. Just drill the holes, dry fit everything and shave the bosses down until the shoes are centred ( depth wise) in the drum. Might take a few goes. I don’t think there needs to be a difference in the speedo plate unless I’m missing something. There should be a difference between the pivot and cam bosses. The cam boss needs to be lower by the thickness of the flange on the end of the cam in order to keep the shoes parallel.